High voltage transformer
A high voltage transformer is a device that functions to boost an input voltage supplied from an external power supply to a high voltage and output the boosted voltage. A high-voltage transformer arrangement includes a current inverter connected to the direct current source and generally formed by an arrangement of power-electronic switches, a transformer with primary coil and secondary coil on a transformer core, a switch control for triggering the current inverter, an output rectifier that is connected to the secondary coil of the transformer and a filter connected to the output rectifier. Such a high voltage transformer has a laminated core which is formed of a plurality of iron plates that are piled up one over another, and first and second windings wound over the laminated core. High voltage transformers for ignition systems in modern internal combustion engines generally include a tubular winding form that receives a ferromagnetic core, primary windings surrounding the core and secondary windings wrapped around the winding form. The transformer is generally capable of producing a secondary voltage of around 30 Kv or more. High voltage transformers are commonly used in electronic appliances using a high frequency, such as microwave ovens. The high voltage transformer heats a heater of a magnetron for generating high frequency microwave and simultaneously constitutes a half-wave voltage doubler circuit, thereby applying high voltage of 4,000V to the magnetron via a condenser so that the magnetron generates the high frequency microwave.
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